Kiln bottom



Aug. 3 1926. 1,594,938

l c. E. FULLER KILN BOTTOM Filed August 13, 1925 keten-ted 3, 19226.

isernia CLAUD E. FULLER, (iB NEW YORK, N. Y., ASSGNOR T0 NEW* YORK- Bnrok ILIANDLING CORPORATION, OF `NE YORK, N. Y., A CORPORATION OF NEX/V YORK.

KILN BOTTOM.

Application ledAugnst 13,1925. VSerial 110.749,399.

My present invention relates to kilns, and more particularly to an improved kiln bottom.

In building kilns for the burning of brick, there is an excessive loss in the arches thereof, both of the bric-k which form the arches and of the heat which is prevented from properly yflowing through the arches into the kiln itself. Kiln bottoms as at present made are generally built up of brick work, either by burning arches or by jetting over with the result that the area ot the openings through the arches has not been sutliciently large to allow the heat to travel from. the lire box into the kiln proper. The result is that the bricks forming the arch are overburned 'while there is a great loss ol' heat due tothe constricted area of opening through the arch which blocks the flow of heat fronrthe hre box. ln my present invention l have worked out a means for obviating the objections existing in prior structnres and have devised a kiln bottom 'which can be cheaply built and easily repaired. Preferably this kiln bottom is made up ot a plurality ot pre-cast refractory concrete sha-pes, although pre-cast shapes ot any other suitable material may be utilized it desired. lVith the pre-cast shapes oit my present invention, a. kiln bottom may be quickly and economically built upI and the areaot the openings therethrough may, in the aggregate, be any desired and bear any relation to the area Vof the fire boX opening that is desired, and in the practical embodiment of my' inve ntion, I have secured an area of opening through the pre-cast block kiln bottom that is over twice the area of the fire box opening and, as compared with the aggregate opening between the bricks of prior structures, is over three times as large. As my present invention is applicable to the building of a kiln bottom where mechanical building of the kiln is employed, and where, in such mechanical building, it is customary to utilize what is known in the art as linger courses, I have utilized as an entirely new feature the finger spaces between the finger courses o1 the unitas traversing flues in order to obtain a more uniform distribution of the heat passing through the bottom of the kiln.

The principal object ot my invention, therefore, is an improved and novel kiln bottom.

' des Other objects and novel features ot the con'ibination and arrangement of parts comprising my invention will appear as the de cription of the invention progresses.

ln the accompanying drawings illustrating a preferred embodiment of my invention,

Fig. 1 is a front elevation of a portion a kiln structure;

Fig. 2 is a sectional side elevation on thel line 2-2 of F 1g. 1 and showing, in addi tion, the units of bricks arranged thereon, and t Y v Fig. 3 is a perspective' view of one unit ot the. pre-.cast Ykiln bottom.

Referring to the drawings, 10 designates the brick,y preferably lire brick, built up in piles, as shown, each pile being separated trom the other a distance sutlicient to de tine a tire box or chamber 11'. Numeral 12 ignates a block, preferably of pre-cast refractory concrete-although any other suitable material may be employed-such block 12 having an arched cut-away portion 13 at one end, such arched portion being equal in extent to approximately one haltl the width of the lire b o-X 11 so tha-t, when two o1 the blocks 12 are placed in position, as shown in Fig. 1, the adjacent and cooperating arch portions 18 will be semicircular in form and with the center thereoit in the medial vertical line of the lire box 11. Each ot the blocks 12 is provided on one face thereoil at the top of the arch portion 18 with a `laterally projecting portion 14, such blocks also being on the same face, but at the otherend of the block, top and bottom, with lateral projections 15. The projections 15 extend outwardly as far as the projection 14, andk such projections 15 are arranged parallel to each other to define therebetween a trough or passage 16. The blocks 12 are built up on top or the piles ot bricks 10 as illustrated in Figs. 1 and 2 and, referring to provided tween adjacent blocks 12in a horizontal;

direction through the passages 16. ln the usual size kiln the area of the opening of,

the lire box 11 is ordinarily and `usually 412 square inches, approximately. Utilizingwa kiln bottom built according to my present invention, the area of the openings betweenY adjacent blocks 12 comprising the kiln bottom isA approximately 970 square inches, from which itkwill be obvious that the area, for the passage ofl heated gases through the kiln bottom from theifire box is Llore than twice that oi? the opening of the` tire 'box or iire arch itself, and this area, approximately 970 square inches, is approximately three times the area of the openings between the bricksiorming the top of' kiln bottoms heretofore employed.

Referring now to Fig. 2 wherein is shown a unitoi brick 17 on top of the kiln bottom 12, and which units are assumed'to be built into the kiln by mechanical means, there is shown for such purpose the so-called inger courses 1S, the spaces 19 between finger, courses being provided for the passage ot the brick lifting lingers of the mechanical lifting device. By properly positioning' the linger spaces 19 vertically over the space betveenadjacent blocks 12-such spaces, of course, being Jformed between adjacent blocks 12 by the lateral projections 14 and l-there is provided a plurality of relatively large passages over the openings in bottom,

the kiln bottom and through' which the heated gases may readily vflow upward through the brick forming the unit 17.

ilhile l have described they units form;

ing my improved'pre-cast kilngbottom shape in the interpretation of my invention otherA than as pointed out particularly in the appended claims. j

liar/fing thus described my invention, what llclaim as new is:

1, 1-n improved-unit `for building a kiln comprising aA substantially rectangularV forni o'tpre-cast refractory material, such form havinga substantially arched portion at one end and a plurality-of laterally extending projections on one tace thereof.

2. An improved kiln bottom comprised of ay plurality of pre-cast refractory material shapes, each having 'an arched portion at one end and a plurality of lateral projections on one face thereof, such shapes being arranged in pairs and each pair being arranged parallel to the'next succeeding pair and over the fire boxt or arch of a kiln whereby a plurality ofl parallelly arranged and vertical passages are provided through the bottom. f

ln testimony whereof, I havey signed my nameto this specification.

CLAUD n. FULLER. 

